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Karol,<br>
My apologies; I did not see your earlier email.<br>
<br>
Type97's outputs for flow rates into a zone from ambient are in
airchanges per hour. The units for the interzonal air flow rate
outputs are kg/h. As a side note, the CONTAM help states that
interzonal air flow rate outputs are in kg/s but in fact they are in
kg/h.<br>
<br>
You are correct about the units of Type3 and Type56 although in
Trnsys 17, you are able to select whether you want to provide Type56
airflow inputs in airchanges per hour or in kg/h.<br>
<br>
As I see it, you have two options for seeing the results in m3/h.
You can either convert outputs to m3/h using a constant assumed air
density of 1.2 kg/m3 in an EQUATION block or you can use Type33 to
compute a variable air density. The first option is simpler and
probably good enough; Type56 assumes that the air pressure is always
1 atmosphere.<br>
<br>
As for exfiltration and infiltration not matching, I would imagine
that they should match if you do not define a mechanical system and
just let the building "float." However, if you have a mechanical
system that adds outdoor air to the building and you do not also
define an exhaust fan then all that additional outdoor air must get
out of the building by exfiltration. In the US, a lot of buildings
are pressurized a little bit to force exfiltration to be higher than
infiltration. The result that you are given by the simulation also
depends a bit upon whether you have defined an AHS in CONTAM.<br>
Kind regards,<br>
David<br>
<br>
<br>
On 1/16/2012 05:22, Karol Bandurski wrote:
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<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US">Dear Users<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Because my problem is
very important for me I will ask again to remind my issues.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I use type 56
(TRANBuild), type 97 (CONTAM) and type 3c (fan) to simulate
ventilation.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l2 level1 lfo5"><!--[if !supportLists]--><b><span
lang="EN-US"><span style="mso-list:Ignore">A.<span
style="font:7.0pt "Times New Roman""> </span></span></span></b><!--[endif]--><b><span
lang="EN-US">The problem is that each type have other
outputs/inputs units:<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="margin-left:53.4pt;text-indent:-18.0pt;mso-list:l0
level1 lfo1"><!--[if !supportLists]--><span lang="EN-US"><span
style="mso-list:Ignore">-<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
lang="EN-US">It seems to me that outputs of type 97 are air
change rate per hour.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="margin-left:53.4pt;text-indent:-18.0pt;mso-list:l0
level1 lfo1"><!--[if !supportLists]--><span lang="EN-US"><span
style="mso-list:Ignore">-<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
lang="EN-US">Flow rate in type 3c and 56 is given by kg/hr.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="margin-left:53.4pt;text-indent:-18.0pt;mso-list:l0
level1 lfo1"><!--[if !supportLists]--><span lang="EN-US"><span
style="mso-list:Ignore">-<span style="font:7.0pt
"Times New Roman""> </span></span></span><!--[endif]--><span
lang="EN-US">I would like to get results in m3/hr.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent:18.0pt"><span
lang="EN-US">So my questions:<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l3 level1 lfo2"><!--[if !supportLists]--><span
lang="EN-US"><span style="mso-list:Ignore">1)<span
style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span
lang="EN-US">Should I do some conversion of units between
fan (type 3c) and CONTAM (type 97) or between CONTAM and
Type 56?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l3 level1 lfo2"><!--[if !supportLists]--><span
lang="EN-US"><span style="mso-list:Ignore">2)<span
style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span
lang="EN-US">How can I get air flow in m3/hr or kg/hr form
type 97?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l2 level1 lfo5"><!--[if !supportLists]--><b><span
lang="EN-US"><span style="mso-list:Ignore">B.<span
style="font:7.0pt "Times New Roman""> </span></span></span></b><!--[endif]--><b><span
lang="EN-US">The second issue is that I calculate
year-round infiltration and exfiltration</span></b><span
lang="EN-US"> for my model (natural ventilation) using type
97 and type 28b (Simulation Summary) and it appear that
exfiltration is much larger… How it is possible???<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It seems to me that
exfiltration and infiltration air should be equal if there
is no other way for air.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Karol <o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:PL"
lang="EN-US">------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:PL"
lang="EN-US">Karol Bandurski </span><span
style="mso-fareast-language:PL" lang="EN-US">MSc.</span><span
style="mso-fareast-language:PL" lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:white;mso-fareast-language:PL"><a
moz-do-not-send="true" href="http://www.ee.put.poznan.pl/"
target="_top"><span
style="color:windowtext;text-decoration:none"
lang="EN-US">Institute of Environmental Engineering</span></a></span><span
style="background:white;mso-fareast-language:PL"
lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:white;mso-fareast-language:PL"
lang="EN-US">Poznan University of Technology<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:white;mso-fareast-language:PL"><a
moz-do-not-send="true" href="http://www.ee.put.poznan.pl/"><span
style="color:blue" lang="EN-US">www.ee.put.poznan.pl</span></a></span><span
style="background:white;mso-fareast-language:PL"
lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:white;mso-fareast-language:PL"><a
moz-do-not-send="true" href="http://www.put.poznan.pl/"><span
style="color:blue">www.put.poznan.pl</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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